2004 Audi A4 vs. 2008 Audi S4
To start off, 2008 Audi S4 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 Audi A4. In addition, the cost of maintenance, including insurance, on 2004 Audi A4 would be higher. At 4,124 cc (8 cylinders), 2008 Audi S4 is equipped with a bigger engine. In terms of performance, 2008 Audi S4 (456 HP @ 6800 RPM) has 319 more horse power than 2004 Audi A4. (137 HP @ 4000 RPM) In normal driving conditions, 2008 Audi S4 should accelerate faster than 2004 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi S4 weights approximately 413 kg more than 2004 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2004 Audi A4. In wet, icy, snow, or gravel driving conditions, 2008 Audi S4 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2004 Audi A4 (310 Nm @ 1740 RPM) has 8 more torque (in Nm) than 2008 Audi S4. (302 Nm @ 3500 RPM). This means 2004 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi S4.
Compare all specifications:
| 2004 Audi A4 | 2008 Audi S4 | |
| Make | Audi | Audi |
| Model | A4 | S4 |
| Year Released | 2004 | 2008 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1968 cc | 4124 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 137 HP | 456 HP |
| Engine RPM | 4000 RPM | 6800 RPM |
| Torque | 310 Nm | 302 Nm |
| Torque RPM | 1740 RPM | 3500 RPM |
| Engine Compression Ratio | 18.0:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 201 km/hour | 249 km/hour |
| Acceleration 0-100mph | 10.2 seconds | 6.1 seconds |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1482 kg | 1895 kg |
| Vehicle Length | 4590 mm | 4580 mm |
| Vehicle Width | 1780 mm | 1400 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2580 mm | 2660 mm |
| Fuel Consumption Overall | 5.8 L/100km | 16.4 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
